SELinux
Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC).
SELinux is a set of kernel modifications and user-space tools that have been added to various Linux distributions. Its architecture strives to separate enforcement of security decisions from the security policy, and streamlines the amount of software involved with security policy enforcement.12 The key concepts underlying SELinux can be traced to several earlier projects by the United States National Security Agency (NSA).
Printed 2026-10-13.
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Footnotes
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“SELinux Frequently Asked Questions (FAQ) - NSA/CSS”. National Security Agency. Archived from the original on 18 September 2018. Retrieved 6 February 2013. ↩
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Loscocco, Peter; Smalley, Stephen (February 2001). “Integrating Flexible Support for Security Policies into the Linux Operating System” (PDF). Archived (PDF) from the original on 18 September 2018. Retrieved 23 August 2016. ↩